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Synthetic alexandrite is an artificially grown crystalline variety of chrysoberyl, composed of beryllium aluminum oxide (BeAl 2 O 4). The name is also often used erroneously to describe synthetically-grown corundum that simulates the appearance of alexandrite , but with a different mineral composition.
Alexandrite in sizes over three carats are very rare. Today, several labs can produce synthetic lab-grown stones with the same chemical and physical properties as natural alexandrite. Several methods can produce flux-grown alexandrite, Czochralski (or pulled) alexandrite, and hydrothermally-produced alexandrite.
Raw diamonds from the mines were typically transported to Golconda—now the western part of Hyderabad— [28]) for skilled lapidary, enhancement, further evaluation, and sale. [17] [19] [20] The art of macle, which is a form of rough diamond that is used to produce jewellery, was first developed in the Golconda region. [29]
Beryl (/ ˈ b ɛr əl / BERR-əl) is a mineral composed of beryllium aluminium silicate with the chemical formula Be 3 Al 2 Si 6 O 18. [6] Well-known varieties of beryl include emerald and aquamarine.
Health experts recommend reducing a person's intake of ultra-processed foods. A registered dietitian and the CEO of Nourish Science share some helpful ways to spot these foods where you shop.
Lab-grown diamonds of various colors grown by the high-pressure-and-temperature technique. A synthetic diamond or laboratory-grown diamond (LGD), also called a lab-grown diamond, [1] laboratory-created, man-made, artisan-created, artificial, synthetic, or cultured diamond, is a diamond that is produced in a controlled technological process (in contrast to naturally formed diamond, which is ...
Three-time American League Cy Young Award winner Justin Verlander turned 42 years old on Thursday, and is still hopeful of reaching 300 wins in his big league career. The right-hander is at 262 ...
Despite a spike at the pump in the short term, Kloza forecasts retail gas prices will move lower in the second half of the year. "US gas price averages will largely be well below $3 per gallon in ...